According to Marieb, Mitchell, and Smith (2013): The overall function of the lymphatic system is twofold: It transports tissue fluid (lymph) to the blood vessels, andIt protects the body by removing f

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According to Marieb, Mitchell, and Smith (2013):

The overall function of the lymphatic system is twofold:

  • It transports tissue fluid (lymph) to the blood vessels, and
  • It protects the body by removing foreign material such as bacteria from the lymphatic stream and by serving as a site for lymphocyte “policing” of body fluids and lymphocyte multiplication. (p. 525)

The learning objective for Week 4 in the laboratory course is to identify the features of the circulatory system including the blood and lymphatic vessels that transport fluids and substances including hormones, blood, and nutrients. We will look at the histology and anatomy of the vessels through the models and microscopic slides seen in your Laboratory Manual.

To successfully complete this assignment, first read the following exercises from the Laboratory Manual: Exercise 32: Anatomy of Blood Vessels and Exercise 35A: The Lymphatic System and Immune Response.

Reference:

Marieb, E. N., Mitchell, S. J., & Smith, L. A. (2013). Human anatomy &           physiology laboratory manual (11th ed.). [Fetal Pig version]. San           Francisco, CA: Pearson Benjamin Cummings.

Student Discussion Assignment

  1. Briefly identify and discuss the anatomical and structural differences between arteries and veins.
  2. Briefly identify and discuss differences between blood and lymphatic vessels.
  3. View the anatomical models Figure 32.3,Figure 32.4,Figure 32.8,Figure 32.10,Figure 32.13,and Figure 35.1 (a)from your Laboratory Manual and identify the structures that are described by the following abbreviated statements. Post your brief responses in the threaded Discussion Area below.
    1. Drains the stomach, pancreas, and spleen to the liver for detoxification
    2. Two paired arteries serving the brain
    3. Formed by the union of the radial and ulnar arteries
    4. Drains head, neck, and upper extremities
    5. What the external iliac artery becomes in the thigh
    6. Join to form the inferior vena cava
    7. Receives lymph from the circulation
    8. Filtering clusters under the arm
    9. Enlarged terminus of the thoracic duct
  4. View the histology slides Figure 32.1 (a)and (b)in your Laboratory Manual and identify the microscopic structures indicated by a leader line, number, or bracket. In the threaded Discussion Area below, briefly describe the function of:
    1. Figure 32.1 (a) artery and vein
    2. Figure 32.1 (b) tunica media
    3. Figure 32.1 (b) capillary network

As in all assignments, cite your sources in your work and provide references for the citations in APA format. Support your work, using your course lectures and textbook readings. Helpful APA guides and resources are available in the South University Online Library. Below are guides that are located in the library and can be accessed and downloaded via the South University Online Citation Resources: APA Style page. The American Psychological Association website also provides detailed guidance on formatting, citations, and references at APA Style.